Stove



Jan. 29, 1935. B, HELD 1,989,508

STOVE Filed Nov. 2, 1932 2 Sheets-Sheet l 9% I If may Jan. 29, 1935. B, FIELD 1,989,508

STOVE Filed Nov. 2, 1952 I 2 Sheets-Sheet 2 Patented Jan. 29, 1935 UNI-TED STAT-Es;

STOVE Bernard Field, Brook line;Mass:' Application November 2, 1932. Serial No.:640;787 ZClaims; (o1; 126 36) This invention relates to improvements in stoves and particularly to an oven structure *for combination. stoves that are adapted to utilize eitherwood, coal, oil,- or gas, as fuel.

'Ih'eobject of the invention is to-providea stove'of the type mentioned with an oven in which a gas humer'may bemountedand operatively connectedto its source of fuelsupply without alterin'g the bottom'fluestructure usualh provided in coal stoves.

Another object -of-the invention is "to provide an improved gas burner and baffle" plate therefor mounted one upon another and adapted to be handledas a unit, it being-possible-to disconnect the burner-from the gas supply; pipe-without the use of-tools andremove thebafiie plate and burner inunison front the-oven when coal is to be usedi-n'the stove-as fuel, although these members-may remain in position within said oven if'itisso desired. a

Still another object of the inventionisto pro vide-a novel structure of 'baflle plate'whichis so associated with the gas 'burner that arperfect' circulation of the heat within the I even will be assured.

Still another-very important-obiect of the invention is toso" position the mixing": chamber with relation' to the: fuel entrance orifice to the v burner that a safe connection will always be made between these parts when" the baflle plate,

ispushed to itscorrec't" positionin'theoven; it being assured-that' the baffle plate will" always *be' guided to its correct position by'the engagement of the sides of the baflle-plate with guide portions provided atthe-sidesof the oven and by the en;

gagement of the oven door with the front of'the' baflle plate when theoven door is closed;

The stove; furthermore; embodies in its con.-

struction' an auxiliary'flue for the oven, which is connected Vwith'the main flue of'the stove and. is]- provided with a trap door which is opened when gas is' utilized as a fuel. An auxiliary air. inlet,- suitably baifled, is provided upon the oven-door,

- the amount of air entering the oven through this! inlet being regulated by aislide;

Theinvention consists in an improved stovestructure as SGttfOI'th'lIlbhG followingzspeoificaq tionrandparticulaflyaspointed: out intheclaiihs 50. thereof..

Referring tozthedrawingsz Fig. 1= represents"a-horizontal seotional view-of the oven portion ofa stove illustrating my ime proved-gas burner and bafliplate' therefor mount- 55 edtherein. t

takeii-orr-the linei 2'-2 'or 1='igi; 1. I a Fig. 3' is a vertical sectional} el vationtl'irougl'r a por tion of a stove and is takien 'on' we 111193 0f Fi-:--1-.- a

Fig. iis' an enlarged; detail vertical section takenon-the-line-4'4 of Fig. '1. 7 a 7 I Fig. 5 is an enlarged front elevation of "a portion of ari oven door-illustratingthe-auxiliary" air. openings--providd* therein, together" with: the IG means for =contro11ing the amount of air. passing through saidopeningsu I, V

likenuinerals'referftolike--parts throughout the seVeralWiewsIof"theflfawingsfi Inthedrawings; 6i'is a-stove of} a {type adapted 1'5 to utilize woody coaL -oil or gas; asfuel and com'-" rnonl y called a combination stove: The stove 16 embodies therein: a baking" oven" 7 provided with arrupper wall 8, a lower walltj' at rear 'wall.10, side'fwalls 1.1"3i1'1df8fif1'611t:(1001?12. a A's ,thisinventionresides principall"; intheoven structure f and. portions" of the stove associated therewith. the remainingl portions of "the stove, are broken away in' the drawings to" save space: Locatedvbetween" a" top 13 .for'the' stove "6 and 219 theupperj. 8 "ofjthe oven* is aififie :14 which connects with afiue'" 15*Wi'1ich;v in turn; is adapted to be connected in a" well-known manner with" a; suitahlechimneyJ; Other'fiues15fand l6 arelor dated-beneath the lower"wa'll 9" of theoven fiiaii'd allfof; the fluescommunicate with 'eachf'otherin'a well-known manner'ito perriiifithfihelatarid' prod uctsofcornbustion to pcirculateiaround the oven: before? they eventually" from the stove into" 1 thechi nney' throughithei flue '15; v

H Pfermanently mountedat theTeaffofth stove" Gu'pon therwallf'lo thereof is'a mixing "me ber 17 providediwith a' fuel"mlxihglchambehl there in; Themiking"member"17projects through an o openin provided therefor in the waui iof or the st'oveand has aitubular' portion IQTormed thereon; which'is' providedfwitha dischargeorifice' 20'.- A gas supply pipe. 21f is, connect'ediito the mixing member l'T"and""disch'arges"gas into the mixing. chamber'lii in a welllmown'm'a'nnerl' ,The'rear 46 wallofft-hemixihg member 17" iszprovided with the usual air inletorifice'i22in'front of 'which is a; plate? 23 'whiohisadaptedito be" adjusted in a well-known" manner tofregulate the: amount of air which may 'enterthe' mixingpchamb'e'r' through the orifice22f Positioned within the .1 ov'en"'7 in lorigitiidihal alignment with"the median line of the mixing: memberl'lisagasburner24 whichffi'sisecufredto U andsupported'"beneath'a baffle 'plateflywhich; in"

Fig 2 i's=-an enlarged detail {vertical section turn, is slidably mounted upon and supported by a plurality of lugs 26 which are provided upon the side walls 11 of the oven. The mixing member 17 is so positioned upon the wall 10 of the oven that when the gas burner 24 is. operatively connected thereto that said burner will be located a short distance above the upper surface of the bottom 9 of the oven. The gas burner 24 has a rear extremity 27 which is providedwith a recess 28 into which the tubular portion 19 of the mixing member 17 projects, and the front extremity of said mixing member 17 abuts against a shoulder 29 which is provided within the recess 28. When the gas burner 24 and mixing member 17 are correctly positioned with relation to each other, the discharge orifice 20 of themixing member will discharge the fuel directly into an inlet orifice 30 provided in the burner 24 and a safe connection will be made between the member 17 and burner 24.

3 {The burner 24 isp feferably forked and has a pair of parallel furcations 31 embodied therein and rows ofgasdischarge orifices 32 are providedinthe opposite side walls of said furcations. When the gas fuel is ignited the jets of flame are projected laterally in approximately a horizontal plane from the opposite side walls of the furcations 31. g

The baflle plate 25, upon which the burner 24 is supported, embodies therein an outer bafile member33 which is rectangular in form and is provided with a centrally disposed rectangular opening 34. The baffle member 33 has a flange 35 embodied therein which extends around the opening 34, said flange being formed in such a manner-that a depression 36 will be provided in said bafile plate. A rectangular plate 37 is located in the depression 36 and is supported upon the flange 35.. The edge portions of the plate 3'7 are folded beneath the plate in a manner to clamp a. sheet of. insulating material 38 beneath said plate. The plate37- with the insulation 38 secured thereto and another plate 39 are secured together and to the outer bafile member 33 by a plurality of bolts 40. A narrow space is provided between the edges of the plate 37 and the adjacntifaces of the depression 36 to allow for proper expansioni and contraction between these parts.

' Rows of suitable apertures 41 are provided at the sides of the baflie member 33 and other aperturesj42 are provided at the front of said baflie member. 'Another'opening 43 is provided at the front 'ofthe baffle member 33 thereby forming a handle portion 44 which may be grasped by the hand when the baffle plate 25 and burner 24 are being inserted in or removed from the oven. The rear portions of the opposite side edges of the bafile member 33 are curved at 45 for the purpose of engaging curved guide surfaces 46 which are provided 'at the rear of the side walls 11 of the oven, so that when the baflie plate 25 is inserted in the oven and'pushed rearwardly therein that said bafiie plate will be guided into its correct position with, relation to the mixing member 17. The baffle plate 25 is furthermore so constructed that a front edge 47 thereof will be engaged by a rear edge portion 48 of the door 12 when the latter is closed and the interengagement of these members will cause the baflle plate 25 and burner 24 supportedthereon to be correctlypositioned with relation to the mixing member 17.

.As an aid in igniting the gas at the burner 24', orifices 49 are provided in the upper wall of the furcations 31 of the burner at a pointadjacentto the forward extremity of said furcations,

see Fig. 1. An aperture 50 is also provided in the baffle member 33. The orifices 49 in the burner and aperture 50 in the bafiie member 33 are connected with each other by means of a T- shaped guide member 51 provided with a groove 52 in its under surface, through which a small quantity of gas may be conducted from the burner to the aperture 50 where the gas may be ignited and the flame therefrom will communicate through the groove 52 with the gas emerging from the orifices 32 of the burner. I

As an aid in obtaining pro-per combustion of the gas fuel at the burner 24, an auxiliary air supply is obtained through the door 12, there being a plurality of apertures 53 provided therehaving apertures 55 provided therein which are adapted to align with the apertures 53, and the amount of air which is permitted to enter the oven through the apertures '53 is regulated by moving the slide 54 to vary theefiective areaof the openings 53. A handle 56, is provided for the slide 54. A baflie member 57 is secured at the rear of the door above the slide, 54 and is positioned to deflect the air entering the oven through said slide toward the bottom of the oven. a An auxiliary flue 58 is provided at the rear of the oven and adjacent to. the top thereof; where communication may be had with the flue 15, and a trap door 59 actuated by a handle'60 is so positioned that the fumes and other products of combustion may pass from the oven 7 through the flue 58 and into the flue 15 when the gas burner 24 is being utilizedto heat the oven. At this time the door 59 is heldin its uppermost position by means of a notched portion 61 of the handle which engages-the top 13 of the stove.- When the burner 24 is'not used to heat the oven the door 59 is located in the closed positionillustrated in Fig. 3. p

. When some material other than gas is to be used as a fuel for heating the oven 7;the gas burner 24 may be removed from the oven if it is so desired by opening the door 12 and grasping the handle portion 44 of thebafile member 33 and the entire baffle plate 25 with the burner 24 mounted thereon may be removed in unison from the oven. Each time that the baffle plate and burner are inserted in the oven, the baffle plate 25 is slid rearwardlyupon the lugs 26 until the shoulder 24 of the burner engages the extremity of the mixing member 17.

During the rearward movement of the baffle plate 25 in the oven the curved edges 45 of the baflle member 33 willengage the curved surfaces 46 provided at the sides of the oven and the burner will-be guided so'th'at the cylindrical portion 19 of the mixing member will enter the recess 28 of the burner and correctly align the burner and mixing member one with another.

If it so happens that the baffle plate 25 and burner 24 are not forced rearwardly in the oven so that a proper engagement is made between the burner and mixing member, when the door 12 is closed the rear edge 48 of said door will engage the front edge 47 of the baflie plate and force the latter rearwardly to its-normal position.

The gas fuel is ignited by applying a match at the orifice 50 after the usual gas cock has been a at t pply gas tothe burner.

The various apertures 41 and 42. arepositioned in the bafiie member 33 so that a perfect circula-" tion of-the heat withinthe oven will be assured, and. the apertures 53 in the oven door and baflle member 57 are so positioned that a perfect combustion of the gas fuel will always be obtained.

I claim:

1. A stove of the character described having, in combination, an oven, the side walls of which curve inwardly at the rear end thereof, a fuel mixing member mounted thereon, a. gas burner and baflle plate therefor mounted one upon another within said oven and movable as a unit into and out of operative relation to the fuel mixing member, the side edges of said baflle plate curving inwardly at the rear end thereof and cooperating with the curved side walls of said oven, to guide said burner relatively to the mixing member, and a door for the oven adapted to engage the bafile plate and move the latter to always position the burner at the same location relatively to the mixing member when the door is closed.

2. A stove of the character described having,

in combination, an oven, 2. fuel mixing member mounted thereon, a gas burner and baflle plate therefor mounted one upon another within said oven and movable as a unit into and out of operative relation to the fuel mixing member, means to guide said burner relatively to the mixing member, a door for the oven adapted to engage the baflle plate and move the latter to always position the burner at the same location relatively to the mixing member when the door is closed, means to provide an auxiliary air supply for the burner through said door at the approximate levelof the burner, means to regulate said auxiliary air supply, and a baflle plate fast to said door adjacent to the means for providing an auxiliary air supply for the burner and adapted to deflect said air toward the bottom of said oven and around said burner.

BERNARD FIELD. 

